The study of molecular composition in biomimetic interface of biocomposite/dentin

D Goloshchapov; V Kashkarov; I Ippolitov; Yu Ippolitov; K Nikitkov; J Vongsvivut; P Seredin

doi:10.1088/1742-6596/2086/1/012118

The study of molecular composition in biomimetic interface of biocomposite/dentin

Journal of Physics Conference Series ◽

10.1088/1742-6596/2086/1/012118 ◽

2021 ◽

Vol 2086 (1) ◽

pp. 012118

Author(s):

D Goloshchapov ◽

V Kashkarov ◽

I Ippolitov ◽

Yu Ippolitov ◽

K Nikitkov ◽

...

Keyword(s):

Transition Layer ◽

Molecular Composition ◽

Human Tooth

Abstract The aim of the study is the problem of formation of the biomimetic interface between the dental product and dentin of the human tooth as well as the investigations of molecular-chemical features in biointerface with the use of molecular multivariate IR-visualization. The data on synchrotron IR-mapping made enabled to differentiate the regions of sound dentin tissue and biomimetic transition layer and also to determine molecular groups responsible for the process of integration.

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The Boduszynski Continuum: Contributions to the Understanding of the Molecular Composition of Petroleum

10.1021/bk-2018-1282 ◽

2018 ◽

Cited By ~ 2

Keyword(s):

Molecular Composition

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Oblique-incidence Reflectivity Difference (OI-RD) and Leed Studies of Adsorption and Growth of Xe on Nb(110)

MRS Proceedings ◽

10.1557/proc-780-y3.11 ◽

2003 ◽

Vol 780 ◽

Author(s):

P. Thomas ◽

E. Nabighian ◽

M.C. Bartelt ◽

C.Y. Fong ◽

X.D. Zhu

Keyword(s):

Transition Layer ◽

Layer Growth ◽

Flow Mode ◽

Layer By Layer ◽

Zeroth Order ◽

Step Flow ◽

Low Energy Electron Diffraction ◽

Oriented Film ◽

Low Energy Electron

AbstractWe studied adsorption, growth and desorption of Xe on Nb(110) using an in-situ obliqueincidence reflectivity difference (OI-RD) technique and low energy electron diffraction (LEED) from 32 K to 100 K. The results show that Xe grows a (111)-oriented film after a transition layer is formed on Nb(110). The transition layer consists of three layers. The first two layers are disordered with Xe-Xe separation significantly larger than the bulk value. The third monolayer forms a close packed (111) structure on top of the tensile-strained double layer and serves as a template for subsequent homoepitaxy. The adsorption of the first and the second layers are zeroth order with sticking coefficient close to one. Growth of the Xe(111) film on the transition layer proceeds in a step flow mode from 54K to 40K. At 40K, an incomplete layer-by-layer growth is observed while below 35K the growth proceeds in a multilayer mode.

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Preceding the root development – molecular regulation of proliferative activity in stem cell niche of human tooth germ cervical loops

10.26226/morressier.5ac383212afeeb00097a3cce ◽

2018 ◽

Author(s):

Darko Kero

Keyword(s):

Stem Cell ◽

Root Development ◽

Proliferative Activity ◽

Stem Cell Niche ◽

Tooth Germ ◽

Molecular Regulation ◽

Human Tooth ◽

Human Tooth Germ ◽

Cell Niche

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Improving the wear resistance of hoe blades by modifying of restoration coatings

PROBLEMS OF TRIBOLOGY ◽

10.31891/2079-1372-2019-94-4-27-32 ◽

2019 ◽

Vol 24 (94/4) ◽

pp. 27-32

Author(s):

T.S. Skoblo ◽

I.N. Rybalko ◽

A.V. Tihonov ◽

T.V. Maltsev

Keyword(s):

Wear Resistance ◽

Transition Layer ◽

Surface Coating ◽

Dry Friction ◽

Raw Materials ◽

Bentonite Clay ◽

Magnetic Fraction ◽

Cutting Surface ◽

Agricultural Machines ◽

Modifying Additive

The possibility of using a non-magnetic fraction of a detonation charge with a diamond fraction from the disposal of ammunition to modify the restoration coatings of a natural product – clay and secondary raw materials — was studied. Four different coating variants were investigated. For this, a T-620 electrode was used with its additional modification by coating with bentonite clay, as well as with a non-magnetic fraction of the detonation charge and applying it in the form of a slip coating on the cutting surface of the cultivator. It is shown that the use of such additives allows to increase the resistance of the working tool of agricultural machines, reduces its tendency to damage due to the minimum penetration of the thin-walled product of the hoe blade and a decrease in the cross section of the transition layer and the level of stress. Each modifier makes changes to increase the microhardness to varying degrees. An increase in microhardness is observed on the surface of the coating and its gradual decrease to the transition layer. The surface coating with the additional introduction of bentonite clay in a liquid bath has the highest microhardness. Its microhardness varies from HV-50-1009.7 to HV-50-615.2. Similarly, the effect of the modifying additive of the detonation charge, the microhardness varies from HV-50-969.6 to HV-50-633.26. When clay or a mixture is introduced into the restoration coating, the wear resistance increases by 1.3 - 2 times with respect to the deposited surfacing only by the electrode and by 2 - 3 times to the initial material of the cultivator. It was found that the lowest coefficient is characteristic for dry friction, as well as for hydroabrasive, for samples with additional modification with clay or a detonation charge

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Faculty Opinions recommendation of Molecular composition and ultrastructure of the caveolar coat complex.

Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature ◽

10.3410/f.718088898.793482918 ◽

2013 ◽

Author(s):

Suzanne Scarlata

Keyword(s):

Molecular Composition

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Faculty Opinions recommendation of Proximity biotinylation provides insight into the molecular composition of focal adhesions at the nanometer scale.

Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature ◽

10.3410/f.726426230.793521462 ◽

2016 ◽

Author(s):

Andrew Gilmore

Keyword(s):

Focal Adhesions ◽

Molecular Composition ◽

Nanometer Scale ◽

Insight Into

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Factors Affecting the Wear Behavior of Monolithic Zirconia and the Antagonists: Literature Review

Current Dentistry ◽

10.2174/2542579x02666200206111259 ◽

2020 ◽

Vol 2 (1) ◽

pp. 4-11

Author(s):

Marcia Borba ◽

Paula Benetti ◽

Giordana P. Furini ◽

Kátia R. Weber ◽

Tábata M. da Silva

Keyword(s):

Literature Review ◽

Glass Ceramic ◽

Wear Behavior ◽

Glass Ceramics ◽

Surface Treatments ◽

Human Tooth ◽

Initial Surface ◽

Monolithic Zirconia ◽

Feldspathic Porcelain

Background: The use of zirconia-based ceramics to produce monolithic restorations has increased due to improvements in the optical properties of the materials. Traditionally, zirconiabased ceramics were veneered with porcelain or glass-ceramic and were not directly exposed to the oral environment. Therefore, there are several doubts regarding the wear of the monolithic zirconia restoration and their antagonists. Additionally, different surface treatments are recommended to promote a smooth surface, including glaze and several polishing protocols. To support the correct clinical application, it is important to understand the advantages and limitations of each surface treatment. Objective: The aim of this short literature review is to investigate the factors that may affect the wear of monolithic zirconia restorations in service and their antagonists. Methods: Pubmed/Medline database was accessed to review the literature from a 10-year period using the keywords: zirconia, monolithic, prosthesis, wear. Both clinical and in vitro studies were included in the review. Results: Studies investigated the effect of several surface treatments, including grinding with diamond- burs, polishing and glazing, on the surface roughness, phase transformation and wear capacity of monolithic zirconia. The wear behavior of monolithic zirconia was frequently compared to the wear behavior of other ceramics, such as feldspathic porcelain, lithium disilicate-based glassceramic and leucite-reinforced glass-ceramic. Human tooth, ceramics and resin composites were used as antagonist in the investigations. Only short-term clinical studies are available (up to 2 years). Conclusion: Literature findings suggest that zirconia monolithic restorations are wear resistant and unlikely to cause excessive wear to the antagonist, especially when compared to feldspathic porcelain and glass-ceramics. Monolithic zirconia should be polished rather than glazed. Yet, none of the polishing systems studied was able to completely restore the initial surface conditions of zirconia after being adjusted with burs. More clinical evidence of the antagonist tooth wear potential of monolithic zirconia is needed.

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